Sub-surface release plug assembly with non-metallic components

Details Sub-surface release plug assembly with non-metallic components Sub-surface release plug assembly with non-metallic components

1993-11-24

1995-05-09

Britts, Ramon S.

Wells

Pistons, fluid driven into well

166192, E21B 3316

Patent

active

054131723

ABSTRACT:
A sub-surface release plug assembly for use in cementing an outer casing annulus around a well casing. The plug assembly comprises non-metallic materials, and in particular, high-strength engineered plastics. A method of drilling out the plug assembly using a drill bit with no moving parts is also disclosed.

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Brochure from Rogers Corporation (Undated but admitted to be prior art).
Brochure from Occidiental Chemical Corporation (Undated but amitted to be prior art).
Brochure from Fiberite Corporation (Apr. 1966).

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